retake near-silent takes; whisper cap 15

kaggle/director_probe.py

@@ -34,7 +34,7 @@ MIN_CHARS, MAX_CHARS = 8, 40
 # Whisper slots get a tighter cap. Measured: 8-15 character whisper lines come
 # out clean, a 24 character one collapsed to 0.4 s of near-silence in both the
 # teacher and the student.
-SLOT_MAX = [40, 40, 40, 40, 18, 18]
+SLOT_MAX = [40, 40, 40, 40, 15, 15]
 LATIN_OR_DIGIT = re.compile(r"[A-Za-z0-9]")
 ALLOWED = re.compile(r"^[\u4e00-\u9fff，。？！、；：…——“”‘’「」《》]+$")